This topic has probably been covered before, but I just bought a '96 3500 dually 2wd SLT Lamarie. Mine has no fog lights or switch. I noticed other trucks that had the switch and lights, and on ebay, theres a set for sale, but is says for NON-DUALLY. Why the difference? Which trucks got foglights and is it hard to retrofit them? I want to fill up the holes in the grille with something, they look so lonely and bare. Bob